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62 lines
1.8 KiB
C
62 lines
1.8 KiB
C
/* OpenRISC helper for the clone syscall.
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Copyright (C) 2022 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <stdarg.h>
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#include <sysdep.h>
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extern int __or1k_clone (int (*fn)(void *), void *child_stack,
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int flags, void *arg, pid_t *ptid,
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void *tls, pid_t *ctid);
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/* The OpenRISC ABI uses the stack for varargs like those using in clone
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but the linux syscall ABI uses registers.
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This function moves from varargs to regs. */
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int
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__clone (int (*fn)(void *), void *child_stack,
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int flags, void *arg, ...
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/* pid_t *ptid, struct user_desc *tls, pid_t *ctid */ )
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{
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void *ptid;
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void *tls;
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void *ctid;
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va_list ap;
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int err;
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va_start (ap, arg);
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ptid = va_arg (ap, void *);
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tls = va_arg (ap, void *);
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ctid = va_arg (ap, void *);
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va_end (ap);
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/* Sanity check the arguments */
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err = -EINVAL;
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if (!fn)
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goto syscall_error;
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if (!child_stack)
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goto syscall_error;
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return __or1k_clone (fn, child_stack, flags, arg, ptid, tls, ctid);
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syscall_error:
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__set_errno (-err);
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return -1;
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}
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libc_hidden_def (__clone)
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weak_alias (__clone, clone)
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